Android phone's Google voice search is handy as is, but reader Michael Crider shares a tip with us that we didn't think about before—it also means you have Google's calculator and conversion tools available via voice activation.

Google's ability to discern math you want done, whether it's a simple equation or a conversion of units of measurement is really handy to have. However, it never occurred to us that coupled with Android, you have a voice-activated calculator and unit converter right at your fingertips. Just hit the voice search button as you normally would, and say "two plus two" or "32 degrees farenheit to celsius" and Google will bring up the search results page as usual, with the answer to your problem right at the top. Check out the video for a few examples, and share your favorite voice searching tips in the comments.